Cellar-door.



"0. G. CLAY.

} CELLAR DOOR.

, APPLICATION FILED JUNE 24, 1912.

1,063,35 I PatentedJu1y29,19 13.

dzz'zrzz/zzlg Attorneys Witnesses rgapqimh puNoanAPn'co.,wAsHma'roN. n

ODIN G; CLAY, or was'niiveroiv, DISTRICT or o'onUMBIA.

CELLAR-noon.

Specification'ofLetters Patent.

Patented July "29, 1913.

Application filedihine 24, 1912. 'Serial "No. 705,628.

To all whom it may concern.

Be it known that I, ODIN G. CLAY, a citizen of 'the UnitedSta'tes,residing at lVashington, District of Columbia, have invented a new anduseful Cellar-Door, of which the following is a specification. r

It is the object of this invention to 'provide a grating of novel andimproved 0011- struc'tion, adapted to be mounted for reciprocat-ion in acasing, of the form C'OlIlmonly employed to carry cellar doors, theentire device being adapted to be disposed in horizontal position, inthesidewaik, novel means being provided for mounting the grating forhorizontal reciprocation in the casing, and for normally holding thegrating in a position to close the casing; other and further objects'being made manifest hereinafter as the description of the inventionprogresses.

The drawings show but invention, and it is to be understood, that,

one form of the within the scope of what is claimed, various changes inthe form, proportions and size of the parts may be made withoutdeparting from the spirit of the invention.

Similar numerals of reference are em ployed to denote correspondingparts of the several figures of the drawings, in which Figure 1 shows myinvention in perspective, parts being broken away better to il1us tratethe structure. Fig. 2 is afragmentary section of the device, parts beingin elevation; and Fig. 3 is a fragmentary section in a plane at rightangles to the cutting plane of Fig. 2, parts being in elevation.

In the drawings, the numeral 1 denotes the sidewalk, and the numeral 2the curb- It is to be understood that my invention may be mounted in anysuitable location between the gutter and the building line, but, in thepresent instance I have located the same relatively near to the curbing2.

A casing 3, is provided, carrying doors 19. There may be one or more ofthe doors, and they may be mounted to operate in any suitable manner. Inthe present instance, two doors are shown, and they are hingedlyconnected with the ends of the casing 3. The rear wall 5 of the casing 3serves as an attaching member for the extremities of a plurality oftubular members 4, which, as shown in Fig. 1, extend rearwardly from theeasing into the sidewalk 1. Mounted for reciprocation in the tubes l area plu ral'ity of rods '6, with the forward ends of which is rigidlyassembled a bar 7, having notches in its ends, whereby the bar may bes'lidably mounted, u on the flanges 10 of guides 8 which are secured inany desired manner to the sides 9 of the casing 3, the construction"being such that the grating, comprising the bar 7 and the rods 6 isadapted to reciprocate upon the guides 8 beneath the doors 1%).

Yieldable means are provided for normally holding the grating inabutment with the front ll of the "casing 3 and these means include alug 12 which projects rearwardly from the bar To this lug 12 isconnected one end of a. flexible element 14, a chain or the like, theintermediate portion of which passes over a sheave 15 journaled forrotataon upon the portion 11 of the casing, a weight 18 being carried bythe lower end of the flexible member 14., the weight 18 being arrangedto reciprocate, together with the chain whereby it is carried in a tube17 which may be mounted upon the front wall 16 of the cellar or securedin an upright position in any other approved manner. At this point, itmay be stated that in Fig. 1 of the drawings, the grating is shownspaced apart from the coplng 2, but it is to be understood that this isnot the normal position of the grating, the weight 18 normally holdingthe grating in contact with the front portion of the casing, the drawingof Fig. 1 being intended more clearly to reveal the structure than wouldbe possible if the grating were shown, in Fig. 1, in

.20 is provided, secured by a short chain or the like, to the casing 3,and this pin 20 when the' grating is pushed rearwardly, is adapted to beinserted in an opening 22 in the flange 10 of the guide, in front of thegrating, to hold the grating in open position, against the effort of theweight 18, the lip 23 being cut away as denoted by the numeral 21, forthe reception of the pin 20. It is of course to be understood, that anysuitable locking means may be employed for holding the grating in closedposition.

I have shown but a single chain and weight for actuating the grating,but it is to be understood that in practice, each of the front cornersof the grating is actuated by a mechanism of the type shown in Fig. 2, aspecific delineation of each of said mechanisms being consideredunnecessary.

It will be seen that the foregoing device, although simple inconstruction and of few parts serves as a means whereby, when the doors19 are thrown open, the opening to the cellar will remain normallyclosed, the necessity for erecting barriers about the opening beingrendered unnecessary, the grating normally moving to closed positionunder the effort of the weight 18 saving alone the case in which the pin20 has been mounted in place, with the deliberate intention of holdingthe grating open.

The device is so constructed that the grating may be slid to an openposition, and, when, so disposed, the effective area of the opening willnot be materially decreased, the rods 6 being housed within the tubes 4,in an out of the way position, the entire construction of the devicebeing such it can not readily be broken open with feloniousintentwithout shattering some of the parts or digging the tubes 4 andthe casing 3 out of the sidewalk.

Having thus described my invention what I claim as new and desire toprotect by Letters Patent is In a device of the class described, amonolithic pavement having an opening; a frame extended around theperiphery of the opening; tubes extended outwardly from 7 one end of theframe; a grating movable in the opening and comprising rods slidable inthe tubes; a closure hinged to the frame and movable independently ofthe grating to extend over the opening; yieldable means connected withthe grating and independent of the closure, for advancing the gratingacross the opening into engagement with the other end of the frame; thetubes being embedded in the pavement to reinforce the pavement adjacentthe opening and to hold the frame against movement when the lastspecified end of the frame is engaged by the grating.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two Witnesses.

ODIN G. CLAY.

Vitnesses:

WALTER BROWNLEY, W. P. KEELs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

